I know by the exif data that is embedded in yours and his photo!! Do you not know that that tells you a lot

According to the exifs both pictures are 1/160 f/7.1 ISO 400 - either thats the one rare instance where both brands metering systems choose exactly the same parameters, or the cameras where set to manual, same settings for aperture and sensitivity because of non-TTL strobes work that way and a shutter speed thats xsync+ some safty margin for radio triggers.

You could infer to what power the the flashguns are set, but there is no useable data about the ambient light.